Geodesic Dome

The geodesic dome makes for a strong structure -- one which lends itself well to a greenhouse:

There are different methods to derive the structure for any arbitrary size using repeatable, standardized components:

Kits

• HarvestRight makes a nice kit that I can vouch for -- here is the biggest (32')

Tools

• Geodesic Dome Calculator -- can create plans for V1, V2, V3 etc. domes of arbitrary sizes.

• Domes can also be constructed from Earth Bag Construction. See this tool: Earth Bag Dome Calculator.

References

• https://waymoot.org/home/dome/